What is ISO/TS 11819-3 about?
ISO/TS 11819-3 specifies two tyres intended to serve as reference tyres when using the close-proximity (CPX) method.
The CPX method is a method for evaluating different road surfaces with respect to their influence on traffic noise, under conditions when tyre/road noise dominates. This method ideally requires the use of standardized tyres, which have noise characteristics that are broadly representative of the effect of road surfaces on the noise emission of passenger cars and heavy vehicle tyres.
Who is ISO/TS 11819-3 for?
ISO/TS 11819-3 on the measurement of the influence of road surfaces on traffic noise is beneficial for:
- Road planners of low-noise surfaces
- Road administrators of low-noise surfaces
- Contractors of low-noise surfaces
- Manufacturers of low-noise surfaces
- Manufacturers of tyres
- Other parties concerned with the control of road traffic noise
Why should you use ISO/TS 11819-3?
The emission and propagation of road traffic noise greatly depends on road surface characteristics, notably on texture and porosity. It is important to be able to measure the influence of surface characteristics on tyre/road noise by a standardized method. In this regard, ISO/TS 11819-3 offers an objective rating of the road characteristics.
Different tyres rank road surface influence on noise differently. The two reference tyres in this document are denoted P1 and H1. Tyre P1 classifies the acoustic properties of road surfaces in a similar manner to the majority of passenger car tyres. Tyre H1 classifies acoustic properties in a similar manner to the majority of heavy vehicle tyres. Consequently, combining measurement results for these two tyres provides a good representation of how the noise emission of a mix of light and heavy vehicle traffic is influenced by road surfaces.
ISO/TS 11819-3 provides the requirements for reference tyres based on tread pattern, rubber hardness, test wheel and tyre mounting, amongst others.
Overall, ISO/TS 11819-3 is helpful as it provides complete guidance on the measurement of the influence of road surfaces on traffic noise that can help you in controlling traffic noise and manage traffic flow and composition effectively, especially in vicinities that have clear guidelines of noise pollution levels.
What’s changed since the last update?
PD ISO/TS 11819-3:2021 supersedes PD ISO/TS 118193:2017, which is withdrawn.
PD ISO/TS 11819-3:2021 cancels and replaces the first edition (ISO/TS 118193:2017), which has been technically revised. The main change compared to the previous edition is as follows:
- Update of the correction coefficient